Crash on I-10 West near Loop 1604 snarls northwest San Antonio traffic during Friday commute

What happened and where traffic was affected

A crash on Interstate 10 West created major delays on San Antonio’s northwest side early Friday, February 6, 2026, disrupting the morning commute near the Loop 1604 interchange and nearby exits. Traffic impacts were concentrated around the westbound main lanes and access points serving the La Cantera area, UTSA, and The Rim corridor—one of the region’s busiest stretches during peak hours.

Traffic monitoring systems showed significant slowdowns and lane restrictions after the collision, with conditions changing as responders worked the scene. In the hours after the crash was reported, drivers experienced stop-and-go movement and backups that extended beyond the immediate crash site as bottlenecks formed near ramps and frontage-road connections.

Lane closures and driver guidance

Early reports indicated that at least one westbound lane remained open while other lanes and/or shoulders were restricted, contributing to congestion and reduced speeds. Some exits in the affected area were temporarily closed or difficult to access due to spillover traffic and emergency activity.

Local authorities urged motorists to anticipate delays and consider alternate routes while the crash response and roadway clearance continued. When crashes occur along I-10 near Loop 1604, diversion patterns often push drivers onto frontage roads and nearby arterials, which can quickly become congested as traffic volume increases.

• Expect slower travel times on I-10 West approaching the Loop 1604 interchange.
• Allow extra time for trips to employment centers and retail destinations in the La Cantera and Rim areas.
• Use caution near ramps and merge points where traffic compresses and sudden braking is common.

What is known about injuries and the cause

As of Friday morning, officials had not released confirmed information on the number of vehicles involved, whether anyone was injured, or what factors caused the crash. Investigations typically review roadway conditions, driver statements, potential impairment or distraction, and vehicle damage patterns, though findings can take time and may not be made public immediately.

Why this corridor is prone to cascading backups

The Loop 1604 and I-10 interchange is a critical junction for regional travel between the northwest side, the Hill Country, and employment centers along the I-10 corridor. Even partial lane blockages can trigger cascading congestion because traffic volumes are high and alternative routes often funnel back to the same limited set of crossings and ramps.

For drivers approaching a crash scene on a high-speed roadway, the most dangerous moments often occur upstream of the incident—where traffic transitions abruptly from free-flowing speeds to stop-and-go conditions.

Road conditions were expected to improve once vehicles were removed and lanes fully reopened, though residual delays can linger as traffic queues dissipate.